Asphalt-chopping machine.



C. E. BATHRIGK.

ASPHALT GHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911. 1,089,356, Patented Mar. 3, 191 1.

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a l l I l s COLUMBIA PLAN GGGGGGGGGGGGGGGGGGGGGGGGG c.

G. E. BATHRIOK.

ASPHALT OHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

1,089,356, Patented Maw, 1914.

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COLUMBIA PMNOORAPN C0..wASh|Nu1cN. D. c.

C. E. BATHRIGK. Y ASPHALT GHOPPING MACHINE.

APYLIOATION FILED MAY 25, 1911.

Patented Mar. 3,1914.

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COLUMBIA PLANOORAPH co..WAsHlNuToN. n. cv

O. E. BATHRIGK.

ASPHALT GHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

Patented Mar. 3, 1914.

5 SHEETS-SHEET 4.

O. E. BATHRIOK.

ASPHALT CHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

1,089,356, Patented Mar. 3, 1914.

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Ilidflhfi "Pd.

CHARLES E. BATHRICK, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREBERICK C.AUSTlN, OF CHICAGO, ILLINOIS.

ASPHALT-SHOPPING MACHINE.

Specification of Letters Patent.

Patented Mar. 3, twi l.

Application filed May 25, 1911. Serial No. 629,385.

To all whom it may concern Be it known that I, CnAnLns E. Ba'rnnron, acitizen of the United States, residing at Chicago, county of Cook, andState of illinois, have invented a new and useful improvement inr-rsphalt-Chopping Machines, oi which the "following is a specification.

The object of my invention is to provide a machine for chopping asphaltor like pavement, characterized by various features of novelty.

Viewed in one aspect my invention, broadly stated, comprises a pluralityof choppers mounted to reciprocate in clownwardly converging paths.

Viewed in another aspect my invention comprises operative connectionsbetween the engine-driven. power shaft and the choppers.

Considered in another aspect my invention comprises readily-controlledmeans whereby the operator may throw the choppers into inoperativeposition.

These and other features of novelty will. be understood from a detaileddescription of the accompanying drawings, in which Figure 1 is a view inside elevation of a chopping machine embodying the various features ofmy invention; Fig. 2 is a front view of the machine; Fig. 3 is a viewtaken on the cross-section line 33 of Fig. 1, look ing in the directionindicated by the arrows; Fig. 4 is a plan view of the machine; Fig. 5 isa detailed view in elevation showing one of the choppers and thesupporting member, together with a portion of the operative connectionsbetween the choppers and the power shaft; Fig. 6 is a view in crossscc--tion taken on line 66 of Fig. 5, looking in the direction indicated bythe arrows; Fig. 7 is a cross sectional view taken on line 77 of Fig. 5,looking in the direction indicated by the arrows, and Fig. 8 is aperspective view of a chopping knife.

The operative parts of the machine are mounted on a truck or carriagehaving a framework indicated as a whole by 1. The truck is mounted on apair of rear supporting wheels 2 and a front caster wheel 3 which iscentrally disposed with respect to the frame and is pivoted thereto.From the rear of the truck frame 1 rises the bar 4 which is providedwith a handle 5. A pair of brace rods 6 are at one end secured to thebar 4 and at the other end to the upright angle irons 7 for rigidlyholding the bar 1 in position. By grasping the handle bar 5 the operatormay move the machine from place to place. The upright angle irons 7 areat their lower ends firmly riveted to the horizontal frame 1. The irame1 is provided with apair of depending brackets 8. A pair of channeledguide members 9 are secured to the uprights 7 and the brackets 8 uponopposite sides of the machine in a downwardly converging position. Eachguide member is provided with a pair of perforated lugs 10 and 11, asbest shown in Fig. 1. A bolt or rivet 12 passes through the lug 10 andthe adjacent upright 7, and a bolt or rivet 13 passes through the lug 11and the associated bracket 8. By this means the guide members arerigidly held in proper position on the machine.

its best shown in. Figs. t and 5, each guide member has formed thereon achannel or groove 15 in which is adapted to slide a chopping memberindicated as awhole by 16. As best shown in the perspective view in Fig.8, each chopping member consists of a supporting plate 17 provided atits upper end with a perforated lug 18. r'it its lower end thesupporting plate 1? provided with a perforated lug 19 in alinement withthe lug 1.8 and also with the extension 20. As best shown in Fig. 3. theextension 20 is oliiset from the body of the plate 1'? so that when thechop iiing or cutting knife 21 is screwed or riveted to the extension20, he rear surfaces of the supporting plate 17 and the chopping kniilewill be in alinement. Through the lugs 18 and 19 of each chopper passesa rod which. near its center hashigidly connected thereto an arm 5 Apair of stout compression springs 2 1 are coiled about each oi? the rods22 between the arm 23 and the lugs 18 and 19. W hen the chopping members16 are in place on. their respective guide members 9, the supportingplate 17 rests in the groove or channel 15 while the extension 20 slidesin the slot 15 of the guide member. In this way the chopping members aresecurely and firmly mounted on the guide members and are at the sametime free to reciprocate thereon. The outer end of each arm 23terminates in a bearing portion on which is pivoted a link 26. To theupper end of the links 26 are pivoted the crank arms 27. Each crank arm2'? is rigidly connected to one end of the stub shaft 28 urnaled in asleeve or bearing member 29. To the free ends of the shafts 23 are linedthe sprockets 30. The sleeves or bearing members 29 are connected to thelower ends of the arms 31 provided with perforated lugs 31 to which arepivoted the fork-shaped connecting members 3:2. As seen from Figs. 1 and3, the connecting memers 32 are each provided with two pairs ofbifurcations extending at right angles to each other. To the upperbifurcations are pivoted the links .t their upper ends the links 33 arepivoted to the. connecting pieces 3% which are similar to the connectingmembers 32 in that they are provided with two pairs of bifurcationsextending at right angles to each other. To the upper bifurcations ofthe con .ecting pieces 34 are pivoted the front ends of the arms 35.

As shown in Figs. 3 and a, the arms 35 are fixed to the ends of thetransverse shaft 36 which is journaled in bearings 37 mounted upon theforwardly converging angle bars 33. The arrangement of the angle bars 38is perhaps best shown in Fig. a. At their rear ends the converging anglebars 38 are secured to the upper ends of the uprights 7. A pair ofupwardly converging bars 39 are secured at their lower ends to the frontof the truck frame 1, as shown in Fig. 2. An angle plate L0 connects theupper ends of the bars 39 together and also connects the front ends ofthe forwardly converging bars 3 It will thus be seen that the bars 7, 3Sand 39 constitute a rigid upright framework for supporting various partsof the machine. The transverse shaft 36 has rigidly connected theretothe arm n to the upper end of which is pivoted one end of the connectinglink or red T2. The other end of the connecting rod a2 is pivoted at T3to the hand lever li. The bar t has fixed thereto the collar as providedwith a lug L6 to which is pivoted the hand lever dd by i leans of thepin 47. As shown in Fig. i, the pin l7 projects at both ends through thelug 4-6. To one end of the pin 47 is pivoted the hand lever ed and tothe other end is connected the arm as. At its upper end the arm 43 isprovided with a pin 4C9. An arc-shaped sector 50 is at one end connectedto the bar t and at the other end to th pin 49. To the lever n ispivoted the dog 51, the free end of which is adapted to engage the teeth52 on the sector 50. Near the upper end of the hand lever l is pivotedthe bell-crank 53. G11 the pin or lug 5d of the bell-crank 53 is pivotedthe upper end of the connecting rod 55, the lower end of which ispivoted to the dog 51 at 56. A coil spring 57 which surrounds the upperportion of the link 55 bears at its lower end against the lug 58 whichis provided on the hand lever A, and through which the link 55 passes. it its upper end the coil spring 57 bears against the head of the link 55to normally hold the link in an elevated position and cause the dog 51to engage the teeth of the sector.

A bearing member 59 is secured to the horizontal bars 38 near the frontends thereof. A pair of plates 60 is secured to the bars 38 near therear ends thereof, as best shown in Fig. l. The plates 60 are connectedtogether by the angle bar 61 to the lower surface of which is securedthe bearing member 62. The bearing members 5-9 and 62 are inlongitudinal alinement with each other and are mounted substantiallycentral of the machine for rotatably supporting the shaft 63. The upperends of the arms 31 terminate in sleeve portions 64 which are rotatablymounted on the central shaft 63. A pair of sprocket wheels 65 are fixedupon the shaft 63 and are operatively connected to the sprocket wheels30 through the sprocket chains 66. The rear end of the shaft 63 hasfixed thereto the sprocket wheel 67 which is connected to the sprocket68 by the sprocket chain 69. The pinion 68 is mounted on the power shaft70 of the engine, indicated as a whole by E. Any suitable form or kindof en 'ine may be used. For the sake of illustration T have shown theengine E in the drawings as a gas engine. The fly-wheel of the engine isindicated by the reference numeral 71.

From the above detailed description of the construction of theembodiment illustrated in the drawings, the operation of my machine willbe understood. Power is transmitted from the engine shaft 70 to theupper shaft 63 through the sprocket chain or similar connection 69. Therotation of the shaft 63 is transmitted to the pair of crank shafts 28through the sprocket wheels 65, the sprocket chains 66 and the sprocketwheels 30. Rotation of the crank shaft 28 causes rotation of the crankarms 27. The connecting links 26 convert the rotary motion of the crankarms 27 into a sliding or reciprocat-ory motion of the chopping members16. The angular arrangement of the crank arms 27 is such that when oneof the chopping members is in its lowermost or operative position, theother chopping mem- 361 is in a raised position above the pavement whichis being chopped up. In this way the chopping members reciprocate backand forth in downwardly converging paths. As a result of this movementof the chopping members a substantially i-shaped hole is chopped in theasphalt, indicated at 72 in Figs. 2 and 3.

During the transportation of the achine from one place to another, thechoppers are lifted into inoperative position by means of the hand leverC te. When the operator JOVES the hand l ver rearwardly, the arms 35 arerocked upwardly, thereby raising the arms 31 through the connectionspreviously described. The elevation of the arms 31 raises the sleeves orhearing members 29 in which the crank shafts 28 are journaled. Theraising of the bearing members 29 raises the normal position of thechopping members 16. Consequently, with the sleeves or bearing members29 in elevated position, reciprocation of the chopping members does notbring them into contact with the pavement to be repaired or with theroadway over which the machine is being transported. When the arms arethus moved to inoperative position, it is not necessary to stop theengine, because the lowermost position of the arms will under thesecircumstances be above the level of the pavement.

By means of the above described connections between the hand lever a land the bearing member 29 for the crank shafts 28, the choppers may notonly be moved from operative to inoperative position and vice versa, butthe limit of the downward stroke of the choppers may be adjusted. Insome instances it may not be necessary to cut as deeply into the asphaltas in others. By moving the hand lever n rearwardly the proper number ofnotches, the downward stroke of the choppers may be adjusted to thedesired limit. The hand lever le is held in any one of its actuatedpositions by the dog 51 engaging the teeth of the sectors To release thedog from the sector the operator simply presses the upper arm of thebell-crank 53 toward the handle of the lever 44, whereby the connectinglink is lowered and the dog 51 rocked away from the teeth of the sector.

I do not herein claim broadly the arrangement in an asphalt choppingmachine of choppers moving in downwardly converging paths, since thisfeature is broadly claimed in my co-pending application, Serial Number515,296, filed August 80, 1909.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage having an upright framework mounted thereon, apower shaft journaled longitudinally on said framework, a pair ofdownwardly converging arms pivoted to swing on an axis coincident withthe axis of said p0 er shaft, a crank shaft supported at the lower endof each arm, connections between said power shaft and said crank shafts,a pair of slidable choppers operatively connected with said crankshafts, means for vertically adjusting said arms to vary the limit ofthe downward stroke of said arms, and guiding means for said choppers.

2. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage having an upright framework mounted thereon, apower shaft journaled longitudinally on said framework, a pair ofdownwardly diverging arms pivoted to swing on an axis coincident withthe axis of said power shaft, a crank shaft supported at the lower endof each arm, driving connections between said power shaft and said crankshafts, a pair of slidable choppers operatively connected with saidcrank shafts, means for vertically adjusting said arms to vary the limitof the down-stroke of said arms, and a pair of downwardly convergingguides in which said choppers operate.

3. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage having an upright framework mounted thereon, apower shaft journaled longitudinally on ad framework, a pair ofdownwardly diverging arms pivoted to swing on an axis coincident withthe axis of said power shaft, a crank shaft supported at the lower endof each arm, driving connections between said power shaft and said crankshafts, a pair of choppers operatively posite directions, and a pair ofdownwardly converging guides in which said choppers operate.

a. In a machine for chopping asphalt or like pavement, the combinationof a pair of downwardly diverging arms pivotally connected together atone end, a crank shaft journaled at the other end of each arm, a chopperadapted to be operated by each crank shaft, and means for simultaneouslyraising said arms to hold the choppers out of operative position.

5. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage, a pair of downwardly converging guide membersfixed upon said truck, a chopper adapted to slide in each of said guidemembers, a pair of downwardly d1- verging arms supported on said truck,a crank shaft journaled in the lower end of each arm, and operativeconnections between said crank shafts and said choppers for sliding thelatter alternately in opposite directions.

6. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage, a pair of downwardly converging guide membersfixed upon said truclna chopper adapted to slide in each of said guidemembers, a pair of downwardly diverging arms supported on said truck, acrank shaft journaled in the lower end of each arm, operativeconnections between said crank shafts and said choppers for sliding thelatter alternately in opposite directions,

and means for adjusting said arms to vary the limit of the down-strokeof said choppers.

7. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage provided with a pair of bearings oispcsed onopposite sides of the longitudinal center of said truck, a crank shaftjournaled in each bearing, a slidable chopper operatirely connected witheach crank shaft, and means for vertically adjusting said bearings tovary the limit of the down-stroke of said choppers.

8. In a machine for chopping asphalt or like pavement, the combinationof a truck or carriage having a power shaft mounted longitudinallythereon in a plane passing sub stantially through the center of thetruck, a pair of crank shafts supported on either side of said powershaft, a driving connection between said power shaft and each of saidcrank shafts, a chopper adapted to be Operated by each crank arm, andyieldable connections between said crank shafts and said choppers.

9. in machine for chopping asphalt or like pavement, the combinationwith a plurality of choppers, each comprising a cutting blade, a plateto which the blade is rigidly secured, a pair of perforated lugs on saidplate, of aplurality of slotted guide members with which said plates areadapted to be slidably connected, a rod passing through the lugs of eachplate, a laterally extending arm secured to said rod at a pointsubstantially midway between said lugs, a pair of springs encirclingeach rod between the arm and the lugs thereon, a power shaft, anddriving connections between said power shaft and said rods forreciprocating the latter to operate the choppers.

10. in a machine for chopping asphalt or like pavement, the combinationwith a plurality of choppers, each comprising a cutting blade, a plateto which the blade is rigidly secured, a pair of perforated lugs on saidplate, of a plurality of slotted guide members with which said platesare adapted to be slidably connected, said guide members being arrangedto converge downwardly, a rod passing through the lugs of each plate, alaterally extending arm secured to said rod at a point substantiallymidway between said lugs, a pair of springs encircling each rod betweenthe arm and the lugs thereon, a power shaft, and driving connectionsbetween said power shaft and said rods for reciprocating the latter tooperate the chop pers.

11. in a machine for chopping asphalt or like pavement, the combinationof a frame, a pair of choppers slidably mounted in said frame, a powershaft mounted longitudinally in said frame and between said choppers, apair of crank shafts supported on either side of said power shaft, anddriving connections between said power shaft and each of said crankshafts for actuating said choppers.

12. In a machine for chopping asphalt or like pavement, the combinationof a frame, a pair of downwardly converging guide members securelymounted in said frame, a chopper slidably mounted in each of said guidemembers, a power shaft journaled longitudinally in said frame, a crankshaft supported on either side of said power shaft and connected witheach of said choppers and driving connections between said power shaftand each of said crank shafts for actuatin said choppers.

13. in a machine for chopping asphalt or like pavement, the combinationof a frame, a pair of choppers mounted in said frame, said choppersbeing mounted to slide in downwardly converging aaths, a power shaftjournaled longitudinally in said frame, a crank shaft journaled oneither side of said power shaft and connecting with said choppers, anddriving connections between said power shaft and said crank shafts foractuating said choppers.

H. In a machine for chopping asphalt or like pavement, the combinationof a frame, a pair of choppers mounted to slide in downwardly convergingpaths, means for operat ing said choppers, and readily controllablemeans for adjusting the limit of the downward stroke of said choppers,said means comprising a transverse shaft mounted on said frame, andprovided with an arm at either end having pivotal connections with saidchoppers, and a lever having operative connections with said shaft forrotating the same.

15. in a machine for chopping asphalt or like pavement. the combinationof a frame, plurality of guide members mounted in said frame, a chopperslidably mounted in each of said guide members, a rod slidably mountedon each of said choppers, a crank shaft rigidly connected to each rodsubstantially in their centers, a compression spring coiled about eachrod on either side of said connections and means connecting with saidcrank shaft for operating said choppers.

In witness wiiereof, l have hereunto subscribed my name this 28d day ofDecember, A. D. 1910.

CEILRLES E. BATHRIGK. vfitnesses A. A. THOMAS, Geo. Maurine.

Copies of this patent may be obtained for five cents each, by addressingthe Qomznisslener Patents,

Washington, 3. G.

